Classification
000 - Computer science, information & general works
1,012
600 - Technology
1,003
700 - The arts; fine & decorative arts
969
610 - Medicine & health
961
333 - Economics of land & energy
838
330 - Economics
825
620 - Engineering & allied operations
765
006 - Special computer methods
764
900 - History & geography
557
005 - Computer programming, programs & data
539
004 - Data processing & computer science
511
363 - Other social problems & services
459
320 - Political science
440
140 - Specific philosophical schools
318
380 - Commerce, communications & transportation
290
580 - Plants (Botany)
289
658 - General management
277
621 - Applied physics
264
304 - Factors affecting social behavior
234
551 - Geology, hydrology & meteorology
225
370 - Education
207
340 - Law
175
820 - English & Old English literatures
158
576 - Genetics & evolution
156
630 - Agriculture & related technologies
143
530 - Physics
142
616 - Diseases
141
500 - Natural sciences & mathematics
135
540 - Chemistry & allied sciences
121
300 - Social sciences
117
629 - Other branches of engineering
88
338 - Production
81
720 - Architecture
74
800 - Literature & rhetoric
73
414 - Phonology & phonetics
72
100 - Philosophy & psychology
67
301 - Sociology & anthropology
64
519 - Probabilities & applied mathematics
63
200 - Religion
58
612 - Human physiology
58
306 - Culture & institutions
56
400 - Language
55
581 - Specific topics in natural history
51
371 - Schools & their activities; special education
49
003 - Systems
47
336 - Public finance
45
910 - Geography & travel
45
515 - Analysis
44
780 - Music
42
617 - Surgery & related medical specialties
41
more ...